Originally Posted by
Blackhawk9
CH-53 was rolled and looped from the factory with the approval of USMC for demonstration when the 53 was new , the UH-60 is quite capable of rolling and looping but unlike the 53 which was "owned" by the USMC the US Army which "Own" the UH-60 frown upon such maneuvers.
135 developed from the 105 so more than likely very capable of doing a role and loop but why would you.
Here's the video of the 53.